Sifter-spout.



F. B. LUGKING.

SIFTER SPOUT. APPLICATION FILED Ambsl, 1911.

Patented June 4, 1912.

2 SHEETS-SHEET 1.

,F=q-L F. B. LUUKING.

SIFTER SPOUT. APPLICATION FILED 11119.31, 1911.

Patented June 4; 1912.

2 SHEETS-SHEET 2.

q/Vi/tmeowo FRANK B.-LUCKING, OF CANNON FALLS, MINNESOTA.

SIFTER-SPOUT.

Specification of Letters Patent.

Patented June 4," 1912.

Application filed August 31, 1911. Serial No. 647,094.

. To all whom it may concern my inventio-nis to Be it known that I, FRANK B. LUCKING, a citizen of'the United States, residing at Cannon Falls, in the county of Goodhue,

. State of Minnesota, have invented certain new and useful Improvements in Sifter- Spouts; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to new and useful improvements in sifter spouts for use in connection with sifting mills and the object of provide a metallic spout adapted to take the place of the usual cloth spouts now in use for connecting the feed spouts with the vibrating portion of the machine and for connecting the discharge spouts of the machine to the bins.

With this and other objects in view, my

I invention will be more fully described, illustrated in the accompanying drawings which show a preferred embodiment of the spout and then specifically pointed out in. the

claims which are attached to and form a part of this application.

In the accompanying drawings: Figure 1 is a side elevation of the spout, the same being shown employed in conveying the flour from the discharge spout of the sifter to a bin, Fig. 2 is a similar view showing the position of the spout when the sifter has moved to one side of its stroke, Fig. 3 is a central longitudinal section of the spout, and Fig. 4 is a transverse section on the line 4-4 of Fig. 1. Fig. 5 is a side elevation of thespoutand bin, in disassembled relation.

Referring more specifically to the drawings, in which similar reference numerals designate corresponding parts throughout, 1 designates a portion of a conventional form of sifter having a discharge spout 2 and 3 designates in general my improved spout which as shown, connects the discharge spout 2 with the receiving spout 4 of the bin 5.

The spout proper consists of the cylindrical telescoping body members 6 and 7, the former of which is provided adjacent its upper end with outwardly extending ears 8 while the latter is provided intermediate its length with oppositely disposed u-shaped members 9, the sides of which extend outwardly from the body members and are perforated to receive rods 10. the er ends of which are passed through similar perforations-formed in the ears 8. These rods are threaded to receive the nuts 11 by means of which they are secured to the ears 8 and helical springs 12 surround these rods and bear between the ears and the lower sides of the U-shaped members 9, these springs serving to normally maintain the members 6 and 7 in extended position. The part of the spout thus far described is formed of sheet metal, preferably thin and is therefore notonly light and durable but is also impervious to even the finest particles of flour by which means all escape of flour into the air is avoided.

The lower end of the body member 6 is provided wit-h an annular flange or bearing collar 13, the lower face of which is rounded as at 14fv to correspond to the hollowed upper face 15 of a bearing collar 16 which is preferably secured to the upper end of the receiving spout of the bin 5 as shown. Secured to the upper end of the body member 7 is a bearing collar 17 which as shown is similar in form to the collar 16 and which coact's with a collar 18 similar in construction to the collar 13 and secured to the lower end of the discharge spout 2. These collars are all preferably formed each of a single piece of relatively heavy metal such as pressed steel and are therefore capable of withstanding a great amountof wear. Moreover it will be seen that because of their peculiar shape and because of the expansive action of the springs upon the body members this wear will be uniform in all parts and will be immediately and automatically taken up. As shown the body members 6 and 7 are so proportioned and the springs are ofsuch strength that the collars 13 and 17 are constantly and firmly held in engagement with the collars 16 and 18 respectively, irrespective of the position of the Sifter and the consequent angle of inclination of the spout. It will also be seen that the threaded rods 10 and the nuts 11 form a simple means for adjusting the tension of the spring and consequently the closeness of engagement between the collars.

What is claimed is:

1. In a device of the character described,

scoping cylindrical body members, one of said body members being provided with perforat l ears, the other of said members being provided with oppositely positioned U- shaped members the sides of which extend outwardly and are perforated, threaded rods pass through the perforations of said ears and U-shaped members, nuts securing said rods in adjusted position in said ears, springs carried by said rods and bearing bet-ween the ears and the sides of the U-shaped members to normally maintain said body members in extended position, and ball and socket coupling means between the free ends of said body members and said spouts.

2. In a device of the character described, the combination with an upper discharge spout and a lower receiving spout, of'a pair of telescoping cylindrical body members, means for normally malntalnlng sa1d mem bers 1n sa1d positlon, bearlngcollars carried by the free ends of said body members, and bearing collars carried. by said spouts and 20 FRANK B. LUCKING.

Witnesses:

T. R. JOHNSON, CHRIST ILLA. 

